<?
function assign_rand_value($num)
{
// accepts 1 - 36
  switch($num)
  {
		case "1":
		 $rand_value = "a";
		break;
		case "2":
		 $rand_value = "b";
		break;
		case "3":
		 $rand_value = "c";
		break;
		case "4":
		 $rand_value = "d";
		break;
		case "5":
		 $rand_value = "e";
		break;
		case "6":
		 $rand_value = "f";
		break;
		case "7":
		 $rand_value = "g";
		break;
		case "8":
		 $rand_value = "h";
		break;
		case "9":
		 $rand_value = "i";
		break;
		case "10":
		 $rand_value = "j";
		break;
		case "11":
		 $rand_value = "k";
		break;
		case "12":
		 $rand_value = "l";
		break;
		case "13":
		 $rand_value = "m";
		break;
		case "14":
		 $rand_value = "n";
		break;
		case "15":
		 $rand_value = "o";
		break;
		case "16":
		 $rand_value = "p";
		break;
		case "17":
		 $rand_value = "q";
		break;
		case "18":
		 $rand_value = "r";
		break;
		case "19":
		 $rand_value = "s";
		break;
		case "20":
		 $rand_value = "t";
		break;
		case "21":
		 $rand_value = "u";
		break;
		case "22":
		 $rand_value = "v";
		break;
		case "23":
		 $rand_value = "w";
		break;
		case "24":
		 $rand_value = "x";
		break;
		case "25":
		 $rand_value = "y";
		break;
		case "26":
		 $rand_value = "z";
		break;
		case "27":
		 $rand_value = "0";
		break;
		case "28":
		 $rand_value = "1";
		break;
		case "29":
		 $rand_value = "2";
		break;
		case "30":
		 $rand_value = "3";
		break;
		case "31":
		 $rand_value = "4";
		break;
		case "32":
		 $rand_value = "5";
		break;
		case "33":
		 $rand_value = "6";
		break;
		case "34":
		 $rand_value = "7";
		break;
		case "35":
		 $rand_value = "8";
		break;
		case "36":
		 $rand_value = "9";
		break;
	  }
	return $rand_value;
}


function getCodeSecret( $length ) {
	 if( $length > 0 ) { 
	  $rand_id="";
	  for( $i = 1; $i <= $length; $i++ ) {
	   mt_srand( ( double )microtime() * 1000000 );
	   $num = mt_rand( 1,36 );
	   $rand_id .= assign_rand_value( $num );
	   }
	}
	return $rand_id;
}
?>